Sensor error when processing Horizontal Pattern: No sensors defined (Discovery Log)

[Sunny45]

Team,

We recently got new instance and have all plugins for discovery installed. I have a first MID server installed pointing to this instance. 

When I ran the discovery to discover the MID server using same MID server, I am getting below error message in discovery log. I believe we can discover the MID server using same MID without any credentials.(correct me if I am wrong). The OS on the server which I am discovering is Windows Server 2019 Standard

 "Sensor error when processing Horizontal Pattern: No sensors defined"

Please advise if I am missing any sensor. I am seeing that there is no sensor defined in Horizontal discovery.(last snap)

 

[Anshu_Anand_ · Accepted solution]

For no sensors defined,

There is kb article for that.

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0547844#:~:text=The%20No%20Se...

Every active probe looks for a corresponding sensor to process the data that is collected by the probe. The No Sensors Defined message indicates that the corresponding sensor for the probe is missing or inactive.

Its very weird, if there is no customisation is not made by you.

Need to see input mesage of ecc queue,

Which step pattern throws the error

[Sunny45]

Thanks Anshu,

Yeah, this is our Fresh brand new instance for Rome and missing Horizontal Discovery Sensor. 

And we just installed discovery and service mapping plugin. 

Looks like the error is thrown during Horizontal Discovery probe pattern.

Note:  I have my PDI which has this sensor available. I am going to try importing that and run discovery again.

[Piyush Kumar]

Hi Kilo Guru

I am still facing the same issue , i have installed the discovery pattern plugin but i did not get the above sensor in sensor table can you please let me where you get this sensor and how to import.

[Sunny45]

Hi Anshu,

Yeap it worked after I imported that sensor from my PDI. 

Still why this sensor was missing is the mystery. 

Thanks. 

[Anshu_Anand_]

discovery_sensor table consists of all the sensors, is all your sensors available compare to demo instance. check that 

is this plugin Discovery and Service Mapping Patterns active in your instance?

scope:-sn_itom_pattern